成年型烟雾病缺血损伤模式与Suzuki分级的关系

目的 探讨成年型烟雾病缺血损伤模式与Suzuki分级的关系.方法 从南京脑卒中注册系统中提取2004年1月至2009年7月以缺血事件为首发症状的成年型烟雾病住院患者44例,其中TIA 12例、脑梗死30例及TIA与脑梗死共存2例.按大脑半球缺血事件先分为TIA组和脑梗死组,后者再按缺血损伤模式不同分为匹配的亚组即皮质下亚组(25个半球)与皮质亚组(11个半球)、前循环亚组(29个半球)与后循环亚组(7个半球)].所有患者均行脑血管造影术,根据造影结果对缺血大脑半球民侧血管按Suzuki标准分级.比较TIA组与脑梗死组、皮质下亚组与皮质亚组、前循环亚组与后循环亚组所占缺血半球个数比例在Suzuki各级别中的差异.结果 Suzuki分级从2级至6级,TIA组、皮质下亚组和前循环亚组缺血半球个数所占比例分别随着血管级别的升高逐渐降低(各自在各级频数的比例分别为11/26、2/13、1/8、0和0;15/15、9/11、1/7、0和0;15/15、10/11、4/7、0和0),对应的匹配组却逐渐升高(各自在各级频数百分比分别为:15/26、11/13、7/8、2/2和1/1;0、2/11、6/7、2/2和1/1;0、1/11、3/7、2/2和1/1),各配对组间差异有统计学意义(对应Z值和P值分别为:-2.33和0.019、-4.49和0.00、-3.66和0.01).另外,前3组的血管平均等级值比各对应组低(分别为2.29和2.97、2.44和4.18及2.62和4.13).结论 成年型烟雾病缺血损伤模式随Suzuki血管分级变化而变化;分级越高,烟雾病患者发生大脑半球后循环皮质区脑梗死的可能性越大.

Relationship between ischemic lesion patterns and Suzuki's vessel grading in adult moyamoya disease

Objective To investigate the relationship between isehemic lesion patterns and Suzuki's vessel grades in adult moyamoya disease(MMD).Methods Forty-four consecutive MMD patients,12 with transient ischemic attack(TIA),30 with cerebral infarct(CI)and 2 with combined TIA and CI,who were diagnosed in Jinling hospital between January of 2004 and July of 2009,were retrieved from Nanjing Stroke Registry Program.Ischemic lesions patterns of CI type of MMD were further divided into two paired subgroups including subcortical subgroup versus cortical subgroup, and subgroup of anterior cerebral circulation versus subgroup of posterior cerebral circulation.In addition,the ipsilateral vessel grades of all symptomatic hemispheres were evaluated by Suzuki's 6-grade system according to the results of cerebral angiography of internal carotid arteries.The percentage of number of hemispheres with ischemic events among the paired groups,including TIA group versus CI group,subcortical subgroup versus cortical subgroup,and subgroup of anterior cerebral circulation versus subgroup of posterior cerebral circulation,were analyzed respectively with changes of the Suzuki's grading.Results For above-mentioned each paired groups.the percentage of number of hemispheres with ischemic events was gradually decreased in the former (namely,11/26,2/13,1/8,0 and 0;15/15,9/11,1/7,0 and 0;15/15,10/11,4/7,0 and 0)and increased in the latter(namely,15/26,11/13,7/8,2/2 and 1/1;0,2/11,6/7,2/2 and 1/1;0,1/11,3/7,2/2 and 1/1 ) from grade 2 to grade 6, and the differences were statistically significant (Z = -2. 33 and P =0. 019,Z = - 4.49 and 0. 00, Z = - 3.66 and 0. 01, respectively ). Moreover, the mean value of Suzuki' s grade was lower in the former than the latter for above-mentioned three groups (2. 29 vs 2. 97, 2. 44 vs 4. 18 and 2. 62 vs 4. 13, respectively). Conclusion The ischemic lesion patterns of adult MMD is changing with the change of Suzuki' s vessel grading. The higher the Suzuki' s grade, the greater the likelihood of ischemic lesions involving the cortical areas of posterior cerebral circulation.